Gas-regulator for mixing-chambers.



F. L. GROSS.

GAS REGULATOR FOR MIXING CHAMBERS.

APPLICATION FILED JUNE 20, 1910.

Patented Apr. 7, 1914.

2 SHEETS-SHEET l.

. MW FRANK L.Cno'S V50 I alike pump F. L. (moss. GAS REGULATOR POEMIXING CHAMBERS.

APPLIOATIOH FILED JUNE 20, 1910.

Patented Apr. 7, 1914 2 SHEETS-SHEET 2.

Fig.4

wua/wtoz .FRANK L.CnoSS I WW Q%JJWM To all whom it may concern:

FRANK L. shoes, or Manson, wrsoo'ns'iu.

GAS-REGULATOR FOR MIXING-CHAMBERS.

Specification of Letters Patent. 7 Application filed June 20, 1910.Serial No. 567,840.

Patented Apr.'7, .1914.

Be. it known that I, FRANK L. Onoss, a citizen of the United States ofAmerica, residing at Madison, in the county of Dane and State ofWisconsin, have invented certain new and useful Improvements in Gas-Regulators for Mixing-Chambers, of which the following is aspeclfication, reference be-- ing had therein to the accompanyingdrawings.

In a gas generating and distributing apparatus it is frequentlydesirable to introduce currents of as or air from two independentsources of supply to a mixing chamber or main and to govern theirrelative rates of flow" so that a constant rotio is maintained betweenthem, regardless of an changes or variations in one of them whic may bebrought about, by conditionsdue to the use to which the apparatus 1sput, or by regulation of one of the currents by the operator.

This invention relates to means for automatically regulating flow of gasor air into a chamber or the like from two independent sources in such amanner that the flow through the conduit supplying one column of gasvaries automatically in response to changes in the flow through theother conduit whereby a constant ratio of flow 1s maintained between thetwo incoming currents. h

The invention consists in the matters hereinafter set forth, and moreparticularly pointed out in the appended claims.

. In the drawings, Figure 1 is alongitudinal sectional view largeldiagrammatlc of an apparatus that embodies features of the 1nvention;Fig. 2 is a longitudinal sectlonal view of the apparatusas adapted foruse with a thermostatic regulator or the like; Fig. 3is a longitudinalsectional view,largely diagrammatic, of a modification of the apparatus;and Fig. 4 is a longitudinal sectional view of a modification showinganother means ofmaintaining a constant ratio in the flow of gas or airfrom two sources of gr y- I e err ng to the drawings, a mixing chamber-1 is supplied with gas from a convenient source by a conduit 2 which hasa variable and adjustable restriction or ajutage' near p its inlet tothe chamber that is preferably in the form of a permanent adjustmentcock 3. The fiow into the conduit 2 is controlled by a cook a which asindicated in Fig. 1 may, be

operated. manually, or, asshown in Fig. 2, may be a-fluld pressuregoverned valve 0p: erated as bya thermostat or the like. The

as or air from this source may be termed primary and the conduit theprimary conduit for the 1purpose. Gas or air from a second source 0supply is discharged into the chamber 1 through a conduit 5 with arestriction or ajutage 6 near its mouth. This, for sake of clearness, ishereinafter referred to as the secondary gas or air and its conduit asthe secondary conduit. It is evident that under the law of flow ofliquids through orifices the rates of discharge from the conduits 2 and5 are each dependent upon the size of the openings of the respectiverestrictions at 3 and 6 and upon the heads under which the fluids pass.the restrictions. Accordingly, by adjusting preferred form, the valvehas an apertured seat provided with a closure 8 that is shifted by adiaphragm 9' in a pressure.drum 10 through the medium of a connectingstem 11. An auxiliary diaphragm 12 likewise connected to the stem 11,serves to balance the closure-8. A sprin 13 counterbalances in part theweight of t e diaphragm and stem and its tension maybe regulated by asuitable ad'usting screw 14. The upper chamber of t e drum 10 isconnected by a pipe 15- with the primer conduit 2. A pipe 16 from thelower chain er-of the drum opens into the conduit 5 on the high pressureside of the ajutage 6. I

In operation the regulating valve closure 8 tends to move away from itsseat when the ressure in the main 2 increasesbeyond'that 1n the main 5.This increases the pressure in the latter main correspondingly. When theregulating valve closes. Obviously the spring 13 and the apertures ofthe restrictions 3 an 6 that any required di ressure decreases in theprimary main, the

may be so disiposed and arranged erence in pressure between the twomains may be maintained in this manner. The pressure in the conduit 2 orthe flow therethrough is subject to the manipulation of the control.cock'4, or if the latter be set and left stationary variations in theinlet pressure of as entering the conduit 5 are taken care of by theregulating valve so that a constant head is maintained on the pressureside of the ajutage 6.

The apparatus is also a volume regulator that determines the amount ofgas supply as a whole to the mixin chamber 1, and if the outgoinggasfrom 't e said chamber be ignited as in a furnace or the like thevalve 4 may be operated through thermostatic connections indicateddiagrammatically as in Fig. 2, to maintain a constant tempera-- ture atthe oint .of ignition.

The available pressure in the conduits 2 and 5 may not be .sufiicient tooperate the regulator valve. In such instances the con-.

anda secondary supply main 20 admittinggas through an ajutitge 21. Aregulating valve indicated at 22' of any preferred type, has itsclosures 23 operated by a diaphragm 24 of a pressure drum 25, a spring26 with adjusting screw 27 acting as'a counterbalance in art for theclosure and operating to hold t e valve open. A valve casing 28 has asingle inlet 29 connected to any suit able source of air or gas underpressure, an outlet 30 in' communication with the upper chamber ofthe'drum 25 through a pipe 31, and ;a-""'second outlet connected w ththe lower chamber of the drum by a pipe 32. A pair of closures 33connected by a stem 34 are arranged to throw the pipe 32 into connectionwith the sup 1y 29 when they are at the lower end of t e1r throw and thepipe 31 with the supply 29 when they are at the upper end of theirthrow, waste outlets 36 and 37 allowing the gas from the drum chambersto escape readily when said chambers are not connected with the supplyopening.

The closures 33 and stem 34 are shifted by a diaphragm 38 in a pressuredrum 39, one chamber of which is connected by a pipe 40 with the conduit18 on the high pressure side of the ajutage 19 and the other chamber,with the main 20 on the high pressure side of the ajutage 21 through apipe 41.

Another form of apparatus that is designed to establish a fixeddifference in pres sure between two conduits discharging into thevmixing chamber, is indicated in Fig. 4. In such arrangement a mixingchamber 42 has one conduit 43 discharging through a variable restriction44, and a secondary conduit 45 discharging into the chamber through anapertured diaphragm 46 or like ajutage. A regulating valve casing 47 1nthe latter conduit has closures 48 and stem 49?operative1y connected toa diaphragm 50 in a pressure drum 51, the whole being counterbalanced orarranged to open or close as the case may be,'under the influence of anadjustable weight 52 acting on the stem through a lever 53. Or acounter-balance spring may be used as indicated in the otherconstructions. Air or gas under pressure is admitted to either side ofthe diaphragm 50 through a suitable valve 54 whose closures 55 on thestem 56- are connected to a diaphragm 57 that formsonewall of a pressurechamber 58. .The latter is in communication with the conduit 45 on thehigh pressure side of the ajutage 46 through a pipe 59. The diaphragm 57is connected to work inopposition to a second diaphragm 60 by means oflinks 61 and a lever 62. A chamber or shell 63 of which the diaphragm 60'forms one wall is in communication through a fitting 64 with the mixingchamber .42. If the weight 52 counterbalances the diaphragm 50 andattachedparts'and the diaphragms 57 and 60 are of equal size, equalpressures in the conduit 45 and mixing chamber are maintained by theapparatus. If however, one of the diaphragms is smaller than the otheras herein indicated, diflerences in ressure corresponding to thedifference .in -t e size of the diaphragms is setup in the conduit andmixing chamber. By t is last form of apparatus both constrictions of theconduits may be of equal size or other arrangement thereof may be used,the relative areas of the controlling diaphragms determining thedifferences in pressure between the conduit and chamber.

The chamber, of course, may be aoonduit,

main or the like. It follows that by the use of this apparatus, theinlet pressuresof two independent columns may be varied in unisonwithout manipulation of the apparatus and without inspection orsupervision of the working parts to correspond to. variations inpressure occasioned in one of them.

Obviously, changes in details of construction may be made withoutdeparting from the spirit of the invention and I do not care to limitmyself to any particular form or arrangement of parts.

What I claim as my invention is 1. In gas apparatus, a chamber havingtwo inlets and an outlet, a primary 'conduit in communication with oneinlet, a secondary conduit in communication with the other inlet, fluidpressure operated means regu lating the flow through the secondaryconduit, and means controlled by the inlet pres-' sure in the primaryconduit and adapted to admit operating fluid to'the flow regulatingmeans of the secondaryconduit to tend to 'two inlets and an outlet, aprimary conduit in'communication with one inlet, a secondary conduit incommunication with the other inlet, means for regulatin the flow throughthe secondary conduit a apted tobe operated by fluid under pressure, andmeans controlled by the inlet pressurein the primary conduit and adaptedto admit operating fluid to the regulating means, the latter vbeingadapted 'to tend to lessen the resistance to the 'flow through thesecondary conduit when the pressure in the primary conduit rises and toincrease the resistance to "the flow when the said pressure fails.

3. In gas apparatus, a chamber having two inlet and an outlet, a primaryconduit in communication with one inlet a a secondalfly conduit incommunication with the other i et, a fluidpressure operated valveregulating the flow through the secondary'conduit, and mechanismcontrolled by the inlet pressure of fluid in the primary conduit andadapted to admit operating fluid to the said valve to tend to open saidvalve when the inlet pressure in the primary conduit increases and toclose it when the said pressure falls;

In testimony whereof -I aflix my signature in presence of two witnesses.

. FRANK L. CROSS.

Witnesses:

.A. REGAN,

JNo. Sr. JOHN.

